Well there isn't anything in this world that are diamond blade can't cut.
No, it is just the style of the chain. There are no actual diamonds in a diamond cut chain.
Yes.
Yes, that is the diamond cutter's job. answer 2 All diamonds are not equally hard! Even though the definition of hardness in the Mohs scale has diamond as 10. Diamonds from New South Wales, Australia...
Given the proper environment, a diamond can cut anything, including another diamond.